Every week a Guardian Money reader submits a question, and it's up to you to help him or her out – a selection of the best answers will appear in Saturday's paper.

This week's question

My impoverished only son and his girlfriend have announced they are getting married. The bride's father is very proud, but in no position to pay for it. The reception is to be in a pub, yet I feel you only marry once and would happily pay for a gigantic party. How do I pull it off without upsetting everyone?